Low-Quality Fuels for Small-Scale Combustion Boilers: An Experimental Study

Moran, J.; Mı́guez, J.L.; Porteiro, Jacobo; Patiño, David; Granada, Enrique

doi:10.1021/ef5019252

Cited by 23 publications

(8 citation statements)

References 51 publications

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“…Experimental works in combustion commonly provide only time‐averaged values for emission patterns , even though it is known that these emissions tend to oscillate significantly. This phenomenon has been noticed in previous works , as the fluctuations in biomass combustion are considerably high. As evidenced by Olave et al and Aleysa et al , gaseous releases show large and frequent fluctuations without a clear pattern, substantially differing from the mean value.…”

Section: Introductionmentioning

confidence: 88%

Influence of the Feeding Rate on the Transient Behavior of a Biomass Combustor

et al. 2019

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Monitored variables in biomass combustion devices, such as emissions or temperature, are usually characterized by their averaged values over the entire process, although they tend to present a pulsating behavior. This assumption induces instantaneous errors when experimental data are used in numerical simulation. The interest in obtaining high‐quality experimental information for a proper model validation leads to find an alternative to describe them and to discern which operating variables are the main ones responsible for those fluctuations. The application of frequency‐domain tools, such as coherence, is proposed as a useful solution for determining if the emission and temperature profiles are intrinsically related to any known periodical signal, such as the feeding cycle.

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Section: Introductionmentioning

confidence: 88%

Influence of the Feeding Rate on the Transient Behavior of a Biomass Combustor

et al. 2019

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“…The combustion of OS in fixed bed has been studied by several authors [113]. Besides, the combustion process of three olive-tree-derived biomasses (OS, pulp and residual olive pomace) was compared and the best results were achieved with OS, obtaining the lowest emission levels of unburned hydrocarbons and the highest efficiency (91.1%) [78].…”

Section: Combustionmentioning

confidence: 99%

Energetic Valorisation of Olive Biomass: Olive-Tree Pruning, Olive Stones and Pomaces

et al. 2020

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Olive oil industry is one of the most important industries in the world. Currently, the land devoted to olive-tree cultivation around the world is ca. 11 × 106 ha, which produces more than 20 × 106 t olives per year. Most of these olives are destined to the production of olive oils. The main by-products of the olive oil industry are olive-pruning debris, olive stones and different pomaces. In cultures with traditional and intensive typologies, one single ha of olive grove annually generates more than 5 t of these by-products. The disposal of these by-products in the field can led to environmental problems. Notwithstanding, these by-products (biomasses) have a huge potential as source of energy. The objective of this paper is to comprehensively review the latest advances focused on energy production from olive-pruning debris, olive stones and pomaces, including processes such as combustion, gasification and pyrolysis, and the production of biofuels such as bioethanol and biodiesel. Future research efforts required for biofuel production are also discussed. The future of the olive oil industry must move towards a greater interrelation between olive oil production, conservation of the environment and energy generation.

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“…However, an excessive excess air could lead to yield losses. The adequate excess air for the combustion of each type of biomass is different, thus a correct adjustment (depending on the biomass type) is necessary [43]. Moreover, an adequate relation of primary air (PA) and secondary air (SA) during combustion led to minimize the gas emissions and to improve the combustion yield [44].…”

Section: Effect Of Excess Air and Primary/second Air Ratio In Gas Emimentioning

confidence: 99%

Combustion of Poplar and Pine Pellet Blends in a 50 kW Domestic Boiler: Emissions and Combustion Efficiency

2018

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Poplar pellets with and without Ca, Mg-lignosulphonate and three poplar and pine pellet blends (with three different percentages of pine-5, 45 and 95 wt.%) were burned in a 50 kW domestic boiler in order to evaluate their suitability as fuels. The boiler efficiency and emissions were analyzed and compared with those from tests with poplar pellet. It was found that the adequate adjustment of excess air and of flowrate of secondary air according to the fuel properties improve the combustion efficiency. The results show an improvement in CO and NO x emissions and combustion efficiency when either Ca, Mg-lignosulphonate or pine were blended with poplar. However, the use of Ca, Mg-lignosulphonate is discouraged due to the observed increase in SO x emissions. No operational problems related with unburned matter or ash were observed for any of the pellet blends tested.

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Low-Quality Fuels for Small-Scale Combustion Boilers: An Experimental Study

Cited by 23 publications

References 51 publications

Influence of the Feeding Rate on the Transient Behavior of a Biomass Combustor

Influence of the Feeding Rate on the Transient Behavior of a Biomass Combustor

Energetic Valorisation of Olive Biomass: Olive-Tree Pruning, Olive Stones and Pomaces

Combustion of Poplar and Pine Pellet Blends in a 50 kW Domestic Boiler: Emissions and Combustion Efficiency

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